About MPEG-7

MPEG-7 is short for multimedia content description interface. MPEG-7 standards are designed to integrate different devices and applications to process the storage, search, indexing, filtering and other applications of audio and video content.

MPEG-7 In the description of audio and video content materials there are two main formats:

(1) XML text format, suitable for editing, searching, and filtering.

(2) binary mode, mainly used for storage and transmission

The MPEG-7 mainly contains the following content of an audio and video media:

A. Information about creation and production (creators, titles, etc)

B authorization and usage (copyright, usage history, playlist, etc)

C storage Information (format, encoding method)

D space, time, and other structural information

E low-level features (color, texture, shape)

F conceptual features (Object object event)

G. Valid Browsing Information (summary, changes, etc)

H object collection information

I. User interaction information (user preferences, experiences, etc)

Main elements of MPEG-7

1 description tools)

(1) Descriptor (d)

(2) description scheme (DS)

(3) Description Definition Language (DDL)

(4) coding schemes

2. System Tools)

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From the above, we can see that D is a low-level description of multimedia content, and DS is a high-level description method based on D. It can only contain D, or D and another ds, or DS and DS.

Finally, these D and DS form a standard XML file in the form defined by DDL. Then they are compiled into binary streams using system tools.

As for what we need to describe, that is, the items A-I mentioned above (corresponding to the six descriptive tools basic elements, content description, content management, content organization navigation and access, user interaction)

MPEG-7 Application Mode

Pull: Search/query browse simply means that the search targets descriptions.

Push: filter: This is for the stream. It allows users to select the data streams they need.

Is the MPEG-7 of two ways of application, one for the description, that is, through some of the interactive information provided by the user to obtain the media content they want; the other for binary stream. For example, digital TV allows users to better select the program they want to watch from multiple video streams.

In my opinion, understanding the above is equivalent to knowing what is going on with the MPEG-7. If you need to have a deep understanding of DDL rules and specific DS descriptions, you have to go through the manual.

Although the MPEG-7 has been proposed for ten years, his details are constantly being improved.

The latest change information can be obtained from here http://en.wikipedia.org/wiki/MPEG-7

A more detailed introduction of MPEG-7 can be seen in the http://mpeg.chiariglione.org/standards/mpeg-7/mpeg-7.htm

A detailed introduction to http://ishare.iask.sina.com.cn/f/22891845.html